From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751175AbWAUImP (ORCPT ); Sat, 21 Jan 2006 03:42:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751184AbWAUImP (ORCPT ); Sat, 21 Jan 2006 03:42:15 -0500 Received: from MAIL.13thfloor.at ([212.16.62.50]:28349 "EHLO mail.13thfloor.at") by vger.kernel.org with ESMTP id S1751175AbWAUImO (ORCPT ); Sat, 21 Jan 2006 03:42:14 -0500 Date: Sat, 21 Jan 2006 09:42:13 +0100 From: Herbert Poetzl To: Linus Torvalds , Andrew Morton , Christoph Hellwig , Al Viro , Linux Kernel ML Subject: [PATCH 4/6] vfs: propagate the nameidata into the relevant vfs_*() Message-ID: <20060121084213.GE10044@MAIL.13thfloor.at> Mail-Followup-To: Linus Torvalds , Andrew Morton , Christoph Hellwig , Al Viro , Linux Kernel ML References: <20060121083843.GA10044@MAIL.13thfloor.at> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20060121083843.GA10044@MAIL.13thfloor.at> User-Agent: Mutt/1.5.6i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org ; ; Bind Mount Extensions ; ; Copyright (C) 2003-2006 Herbert Pötzl ; ; propagate the nameidata into the relevant vfs_*() functions ; similar to the existing vfs_create() to allow for proper ; checks via may_create(), may_delete() and permission() ; ; ; Changelog: ; ; 0.01 - initial version ; Signed-off-by: Herbert Pötzl diff -NurpP --minimal linux-2.6.16-rc1/fs/namei.c linux-2.6.16-rc1-bme0.06.2-nd0.01/fs/namei.c --- linux-2.6.16-rc1/fs/namei.c 2006-01-18 06:08:30 +0100 +++ linux-2.6.16-rc1-bme0.06.2-nd0.01/fs/namei.c 2006-01-21 09:08:56 +0100 @@ -1294,7 +1294,8 @@ static inline int check_sticky(struct in * 10. We don't allow removal of NFS sillyrenamed files; it's handled by * nfs_async_unlink(). */ -static int may_delete(struct inode *dir,struct dentry *victim,int isdir) +static int may_delete(struct inode *dir, struct dentry *victim, + int isdir, struct nameidata *nd) { int error; @@ -1303,7 +1304,7 @@ static int may_delete(struct inode *dir, BUG_ON(victim->d_parent->d_inode != dir); - error = permission(dir,MAY_WRITE | MAY_EXEC, NULL); + error = permission(dir,MAY_WRITE | MAY_EXEC, nd); if (error) return error; if (IS_APPEND(dir)) @@ -1720,9 +1721,10 @@ fail: } EXPORT_SYMBOL_GPL(lookup_create); -int vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev) +int vfs_mknod(struct inode *dir, struct dentry *dentry, + int mode, dev_t dev, struct nameidata *nd) { - int error = may_create(dir, dentry, NULL); + int error = may_create(dir, dentry, nd); if (error) return error; @@ -1771,11 +1773,12 @@ asmlinkage long sys_mknod(const char __u error = vfs_create(nd.dentry->d_inode,dentry,mode,&nd); break; case S_IFCHR: case S_IFBLK: - error = vfs_mknod(nd.dentry->d_inode,dentry,mode, - new_decode_dev(dev)); + error = vfs_mknod(nd.dentry->d_inode, dentry, mode, + new_decode_dev(dev), &nd); break; case S_IFIFO: case S_IFSOCK: - error = vfs_mknod(nd.dentry->d_inode,dentry,mode,0); + error = vfs_mknod(nd.dentry->d_inode, dentry, mode, + 0, &nd); break; case S_IFDIR: error = -EPERM; @@ -1793,9 +1796,10 @@ out: return error; } -int vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) +int vfs_mkdir(struct inode *dir, struct dentry *dentry, + int mode, struct nameidata *nd) { - int error = may_create(dir, dentry, NULL); + int error = may_create(dir, dentry, nd); if (error) return error; @@ -1834,7 +1838,8 @@ asmlinkage long sys_mkdir(const char __u if (!IS_ERR(dentry)) { if (!IS_POSIXACL(nd.dentry->d_inode)) mode &= ~current->fs->umask; - error = vfs_mkdir(nd.dentry->d_inode, dentry, mode); + error = vfs_mkdir(nd.dentry->d_inode, dentry, + mode, &nd); dput(dentry); } mutex_unlock(&nd.dentry->d_inode->i_mutex); @@ -1874,9 +1879,10 @@ void dentry_unhash(struct dentry *dentry spin_unlock(&dcache_lock); } -int vfs_rmdir(struct inode *dir, struct dentry *dentry) +int vfs_rmdir(struct inode *dir, struct dentry *dentry, + struct nameidata *nd) { - int error = may_delete(dir, dentry, 1); + int error = may_delete(dir, dentry, 1, nd); if (error) return error; @@ -1937,7 +1943,7 @@ asmlinkage long sys_rmdir(const char __u dentry = lookup_hash(&nd); error = PTR_ERR(dentry); if (!IS_ERR(dentry)) { - error = vfs_rmdir(nd.dentry->d_inode, dentry); + error = vfs_rmdir(nd.dentry->d_inode, dentry, &nd); dput(dentry); } mutex_unlock(&nd.dentry->d_inode->i_mutex); @@ -1948,9 +1954,10 @@ exit: return error; } -int vfs_unlink(struct inode *dir, struct dentry *dentry) +int vfs_unlink(struct inode *dir, struct dentry *dentry, + struct nameidata *nd) { - int error = may_delete(dir, dentry, 0); + int error = may_delete(dir, dentry, 0, nd); if (error) return error; @@ -2012,7 +2019,7 @@ asmlinkage long sys_unlink(const char __ inode = dentry->d_inode; if (inode) atomic_inc(&inode->i_count); - error = vfs_unlink(nd.dentry->d_inode, dentry); + error = vfs_unlink(nd.dentry->d_inode, dentry, &nd); exit2: dput(dentry); } @@ -2031,9 +2038,10 @@ slashes: goto exit2; } -int vfs_symlink(struct inode *dir, struct dentry *dentry, const char *oldname, int mode) +int vfs_symlink(struct inode *dir, struct dentry *dentry, + const char *oldname, int mode, struct nameidata *nd) { - int error = may_create(dir, dentry, NULL); + int error = may_create(dir, dentry, nd); if (error) return error; @@ -2073,7 +2081,8 @@ asmlinkage long sys_symlink(const char _ dentry = lookup_create(&nd, 0); error = PTR_ERR(dentry); if (!IS_ERR(dentry)) { - error = vfs_symlink(nd.dentry->d_inode, dentry, from, S_IALLUGO); + error = vfs_symlink(nd.dentry->d_inode, dentry, + from, S_IALLUGO, &nd); dput(dentry); } mutex_unlock(&nd.dentry->d_inode->i_mutex); @@ -2085,7 +2094,8 @@ out: return error; } -int vfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry) +int vfs_link(struct dentry *old_dentry, struct inode *dir, + struct dentry *new_dentry, struct nameidata *nd) { struct inode *inode = old_dentry->d_inode; int error; @@ -2093,7 +2103,7 @@ int vfs_link(struct dentry *old_dentry, if (!inode) return -ENOENT; - error = may_create(dir, new_dentry, NULL); + error = may_create(dir, new_dentry, nd); if (error) return error; @@ -2155,7 +2165,8 @@ asmlinkage long sys_link(const char __us new_dentry = lookup_create(&nd, 0); error = PTR_ERR(new_dentry); if (!IS_ERR(new_dentry)) { - error = vfs_link(old_nd.dentry, nd.dentry->d_inode, new_dentry); + error = vfs_link(old_nd.dentry, nd.dentry->d_inode, + new_dentry, &nd); dput(new_dentry); } mutex_unlock(&nd.dentry->d_inode->i_mutex); @@ -2282,14 +2293,14 @@ int vfs_rename(struct inode *old_dir, st if (old_dentry->d_inode == new_dentry->d_inode) return 0; - error = may_delete(old_dir, old_dentry, is_dir); + error = may_delete(old_dir, old_dentry, is_dir, NULL); if (error) return error; if (!new_dentry->d_inode) error = may_create(new_dir, new_dentry, NULL); else - error = may_delete(new_dir, new_dentry, is_dir); + error = may_delete(new_dir, new_dentry, is_dir, NULL); if (error) return error; diff -NurpP --minimal linux-2.6.16-rc1/fs/nfsd/vfs.c linux-2.6.16-rc1-bme0.06.2-nd0.01/fs/nfsd/vfs.c --- linux-2.6.16-rc1/fs/nfsd/vfs.c 2006-01-18 06:08:34 +0100 +++ linux-2.6.16-rc1-bme0.06.2-nd0.01/fs/nfsd/vfs.c 2006-01-21 09:08:56 +0100 @@ -1159,13 +1159,13 @@ nfsd_create(struct svc_rqst *rqstp, stru err = vfs_create(dirp, dchild, iap->ia_mode, NULL); break; case S_IFDIR: - err = vfs_mkdir(dirp, dchild, iap->ia_mode); + err = vfs_mkdir(dirp, dchild, iap->ia_mode, NULL); break; case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK: - err = vfs_mknod(dirp, dchild, iap->ia_mode, rdev); + err = vfs_mknod(dirp, dchild, iap->ia_mode, rdev, NULL); break; default: printk("nfsd: bad file type %o in nfsd_create\n", type); @@ -1441,11 +1441,13 @@ nfsd_symlink(struct svc_rqst *rqstp, str else { strncpy(path_alloced, path, plen); path_alloced[plen] = 0; - err = vfs_symlink(dentry->d_inode, dnew, path_alloced, mode); + err = vfs_symlink(dentry->d_inode, dnew, + path_alloced, mode, NULL); kfree(path_alloced); } } else - err = vfs_symlink(dentry->d_inode, dnew, path, mode); + err = vfs_symlink(dentry->d_inode, dnew, + path, mode, NULL); if (!err) { if (EX_ISSYNC(fhp->fh_export)) @@ -1503,7 +1505,7 @@ nfsd_link(struct svc_rqst *rqstp, struct dold = tfhp->fh_dentry; dest = dold->d_inode; - err = vfs_link(dold, dirp, dnew); + err = vfs_link(dold, dirp, dnew, NULL); if (!err) { if (EX_ISSYNC(ffhp->fh_export)) { nfsd_sync_dir(ddir); @@ -1664,9 +1666,9 @@ nfsd_unlink(struct svc_rqst *rqstp, stru err = nfserr_perm; } else #endif - err = vfs_unlink(dirp, rdentry); + err = vfs_unlink(dirp, rdentry, NULL); } else { /* It's RMDIR */ - err = vfs_rmdir(dirp, rdentry); + err = vfs_rmdir(dirp, rdentry, NULL); } dput(rdentry); diff -NurpP --minimal linux-2.6.16-rc1/fs/reiserfs/xattr.c linux-2.6.16-rc1-bme0.06.2-nd0.01/fs/reiserfs/xattr.c --- linux-2.6.16-rc1/fs/reiserfs/xattr.c 2006-01-18 06:08:34 +0100 +++ linux-2.6.16-rc1-bme0.06.2-nd0.01/fs/reiserfs/xattr.c 2006-01-21 09:08:56 +0100 @@ -35,6 +35,7 @@ #include #include #include +#include #include #include #include @@ -827,7 +828,7 @@ int reiserfs_delete_xattrs(struct inode if (dir->d_inode->i_nlink <= 2) { root = get_xa_root(inode->i_sb); reiserfs_write_lock_xattrs(inode->i_sb); - err = vfs_rmdir(root->d_inode, dir); + err = vfs_rmdir(root->d_inode, dir, NULL); reiserfs_write_unlock_xattrs(inode->i_sb); dput(root); } else { diff -NurpP --minimal linux-2.6.16-rc1/include/linux/fs.h linux-2.6.16-rc1-bme0.06.2-nd0.01/include/linux/fs.h --- linux-2.6.16-rc1/include/linux/fs.h 2006-01-18 06:08:43 +0100 +++ linux-2.6.16-rc1-bme0.06.2-nd0.01/include/linux/fs.h 2006-01-21 09:08:56 +0100 @@ -901,12 +901,12 @@ static inline void unlock_super(struct s */ extern int vfs_permission(struct nameidata *, int); extern int vfs_create(struct inode *, struct dentry *, int, struct nameidata *); -extern int vfs_mkdir(struct inode *, struct dentry *, int); -extern int vfs_mknod(struct inode *, struct dentry *, int, dev_t); -extern int vfs_symlink(struct inode *, struct dentry *, const char *, int); -extern int vfs_link(struct dentry *, struct inode *, struct dentry *); -extern int vfs_rmdir(struct inode *, struct dentry *); -extern int vfs_unlink(struct inode *, struct dentry *); +extern int vfs_mkdir(struct inode *, struct dentry *, int, struct nameidata *); +extern int vfs_mknod(struct inode *, struct dentry *, int, dev_t, struct nameidata *); +extern int vfs_symlink(struct inode *, struct dentry *, const char *, int, struct nameidata *); +extern int vfs_link(struct dentry *, struct inode *, struct dentry *, struct nameidata *); +extern int vfs_rmdir(struct inode *, struct dentry *, struct nameidata *); +extern int vfs_unlink(struct inode *, struct dentry *, struct nameidata *); extern int vfs_rename(struct inode *, struct dentry *, struct inode *, struct dentry *); /* diff -NurpP --minimal linux-2.6.16-rc1/ipc/mqueue.c linux-2.6.16-rc1-bme0.06.2-nd0.01/ipc/mqueue.c --- linux-2.6.16-rc1/ipc/mqueue.c 2006-01-18 06:08:45 +0100 +++ linux-2.6.16-rc1-bme0.06.2-nd0.01/ipc/mqueue.c 2006-01-21 09:08:59 +0100 @@ -738,7 +738,7 @@ asmlinkage long sys_mq_unlink(const char if (inode) atomic_inc(&inode->i_count); - err = vfs_unlink(dentry->d_parent->d_inode, dentry); + err = vfs_unlink(dentry->d_parent->d_inode, dentry, NULL); out_err: dput(dentry); diff -NurpP --minimal linux-2.6.16-rc1/net/unix/af_unix.c linux-2.6.16-rc1-bme0.06.2-nd0.01/net/unix/af_unix.c --- linux-2.6.16-rc1/net/unix/af_unix.c 2006-01-18 06:08:56 +0100 +++ linux-2.6.16-rc1-bme0.06.2-nd0.01/net/unix/af_unix.c 2006-01-21 09:09:04 +0100 @@ -781,7 +781,7 @@ static int unix_bind(struct socket *sock */ mode = S_IFSOCK | (SOCK_INODE(sock)->i_mode & ~current->fs->umask); - err = vfs_mknod(nd.dentry->d_inode, dentry, mode, 0); + err = vfs_mknod(nd.dentry->d_inode, dentry, mode, 0, NULL); if (err) goto out_mknod_dput; mutex_unlock(&nd.dentry->d_inode->i_mutex);